John j



(No Model.)

J. J. HOGAN.

COUPLING FOR UNITING PIPES T0 FITTINGS. No. 459,910. Patented Sept. 22,1891.

Fig.

Jay/agqwiar. 9 I r fin/u N /Ww JOHN J. HOGAN, OF

COUPLING FO BROOKLYN, ASSIGNOR TO THE HOGAN ENGINEERING COMPANY, OF NEW YORK, N. Y.

R UNITING PIPES TO FITTINGS.

SPECIFICATION forming part of Letters Patent No. 459,910, dated September 22, 1891.

ivided and this application filed November 15, 1889. Renewed (No model.)

To all whom it may concern:

Be it known that 1, JOHN J. HOGAN, a citizen of the United lyn, county of Kings, State States, residing at Brookof New York,

have invented certain new and useful Improvements in Con Fittings, fully cation, Serial No.

couple pipes to joint and without exterior of the pipes. the pipes can be made the exact length between the various fittings and coupled together without an the length, which where screw-threads are employed.

By the use of m in a system of pipes and fittings are rendered union-joints, and

permit the introduction of any portion into the removal of any pipe or fitthe system or ting therefrom.

The invention consists in with a fitting having a nozzle provided with external thread and fiat f ace,

fit such face and having arectsquared end to angular groove in the adjacent to its end, an elastic ring divided at one side to spring into such groove and 5 formed with conical exterior,

fitted to slip over the pipe end and provided internally with a conical rior of the ring an application to the described and Uniting Pipes to represented in fication and the accompapart of the same.

plings for means of a buttoutting a thread upon the By this construction y subsequent variation in variation is likely to occur y invention all the joints no unions are required to the combination,

of a pipe with periphery of the pipe and a sleeve seat to fit the exte-v d with a screw-thread for l fitting.

In the drawings, Figure 1 1s a central section of an-elbow and pipe end united by my coupling. Fig. 2

coupling on view of the pipe end.

side view,

and Fig. 5 a

and Fig. 6 is a view with my coupling. 9 is the elbow w line 0000 in Fig. 1.

is a section through the Fig. 3 isa side Fig. 4c is an end view, of the divided ring; of a T adapted for use ith bore f is a fiat face at each end of the elbow, and g a screw-thread formed upon the exte- 5o rior of the nozzle adjacent to the same.

Ct is a part of a pipe provided with rectangular shallow groove b adjacent to the end, forming a collar 1) upon the end of the pipe.

0 is the elastic ring, shown with notch 71. 5 5 in one side of the same, and having a conical exterior fitted to a corresponding seat within the sleeve 6, which is furnished with internal thread 6 to fit the thread g upon the nozzle of the fitting. The ring is shown in the drawings heavier than would be necessary to perform its functions, in order to show its construction clearly, as it would in practice be made thin enough to open at the division h to slip over the collar 1) into the groove 1), with its larger side toward the end of the pipe. The pipe is coupled to the fitting by first slipping the sleeve over the end of the same far enough to apply the ring to the groove. The collar is then pulled for- 0 ward upon the ring and screwed upon the thread g on the fitting, by which the ring is compressed very firmly upon the pipe and the pipe drawn rigidly into contact with the flat face f upon the fitting.

The. pipe-ring operates to move the pipe longitudinally toward the fitting by the contact of its forward corner with the collar 12', andlas the ring is tightly compressed in the groove by the external sleeve the groove may be made very shallow and still perform its functions effectively.

A packing-washer Z,of copper orlead, adapted to prevent leakage, but not to yield under the ordinary strains to which the joint is sub- 8 5 jected, may be inserted between the end of the pipe and the face f, and a joint which is square, rigid, and water-tight may thus be produced. Such washer is not required if the end of the pipe and the face f are made 0 smooth and true.

A T is shown in Fig. 6 provided with nozzles having screwhreads g and flat faces f, the same as shown upon the elbow in Fig.- 1, and is thus adapted to receive a pipe end and 5 sleeve at any of such nozzles, and other fittings, as Ys and branches, may be provided with similar-nozzles and coupled to pipe ends in the manner already described.

The groove Z2 is in practice formed upon the pipe end by a slight modification of the thread-cutters used in cutting threads on pipe by using a special die or cutting-tool. As the groove may thus be formed by the same tools as are alreadyin general use for cutting pipe, it is obvious that an operator may readil cut the pipes to the required lengths and fit them for coupling without the use of screw-dies. The process of coupling pipes together is thus greatly facilitated, while the formation of square joints between the pipe ends and the fittings renders each joint a union-joint and facilitates the removal of any pipe or fitting from a system without moving or deranging any other parts.

I am aware of United States Patents Nos. 324,874, dated August 25, 1885, and 323,567, dated August 4, 1885, which show a construction for forming a joint upon a compressible packing upon the exterior of the pipe by means of a collar clamped thereon. YVith such construction the fluid Within the pipe is not confined wholly to the inside of the pipe, but can operate upon the exterior of the pipe to the point where the packing is applied. My invention difiers from these in having the joint formed at the end of the pipe itself, by which construction the fluidwithin the pipe is prevented from passing into contact with the outside of the pipe at any points, and the invention is thus adapted for use in confining acids and other corrosive liquids in pipes having a lining adapted to resist such liquids. I

My invention also differs from these in being operative without the application of any packing whatever, as the small area of the pipe end may with my construction be crowded forcibly against the opposite fitting to make a joint thereat. Although such patents show in the one case a groove with a collar divided in two halves for application to the grooves and in the other casea conical collar divided at one side to fit upon the pipe, my construction differs from both in its functions, as my collar is not employed to make a joint upon the packing, as in the said patents. I hereby disclaim the said patents and any construction different from that claimed herein.

Having thus set forth the nature of my invention, what I claim herein is The combination, with a fitting having a nozzle provided with external thread g and face f, of a pipe fitted to press upon such face and having a rectangular groove 7) in the periphery of the pipe adjacent to its end,the elastic ring 6, divided at one side to spring into such groove and formed with conical exterior, and the sleeve 0, fitted to slip over the pipe end and provided internally with the conical seat to fit the exterior of the ring and an internal screw-thread for application to the fitting.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

JOHN J. HOGAN. Witnesses CHAS. W. (JHAPIN, WM. F. M. ROGERS. 

